Pytest-watch with coverage (If not existent)

[brunolnetto]

What's the problem this feature will solve?

I can:

1. run tests with package pytest-cov with command run coverage run --rcfile=.coveragerc -m pytest.
2. generate coverage with command run coverage report --show-missing.
3. watch tests with command run ptw --quiet --spool 200 --clear --nobeep --config pytest.ini --ext=.py --onfail="echo Tests failed, fix the issues" -v

I would like to have a way to watch coverage while testing as well. May you enlight me?

Describe the solution you'd like

I wrote following bash script ith desired solution:

#!/bin/bash
clear

while true; do
  coverage run --rcfile=.coveragerc -m pytest
  coverage report --show-missing
  
  sleep 5  # Adjust delay between test runs if needed
  clear
done

Alternative Solutions

I have not found the proper way to proceed.

[The-Compiler]

Looks like ptw has a --runner option which should let you use coverage run pytest. Or, if you are indeed using the pytest-cov plugin, all you should need to do is pass the --cov argument to pytest (no need for coverage run).

Converting this to a discussion, since there's nothing actionable for pytest core here.

[brunolnetto]

Thanks for the quick answer. As far I understand, add a runner command should do the trick. However, it does not.

ptw --quiet --spool 200 --clear --nobeep \
	--config pytest.ini --ext=.py \
	--onfail="echo Tests failed, fix the issues" \
	--runner "coverage report --show-missing"

@The-Compiler also mentioned about running command pytest --cov, which leads to error below. I suppose, there is some in between step I fail to perform.

ERROR: usage: pytest [options] [file_or_dir] [file_or_dir] [...]
pytest: error: unrecognized arguments: --cov
  inifile: /home/brunolnetto/github/API/pytest.ini
  rootdir: /home/brunolnetto/github/API